This extends the ShellMountPasswordDialog by widgets which allow
specifying parameters supported by TrueCrypt and VeraCrypt compatible
volumes (TCRYPT). This includes:
- Whether the volume to be unlocked is hidden.
- Whether the volume to be unlocked is a system partition.
Note: TrueCrypt and VeraCrypt only support encrypting Windows
systems [1], so the label for this option is "Windows System Volume".
- Whether to use a PIM [2].
- Whether to use keyfiles. Unfortunately, GMountOperation doesn't
support TCRYPT keyfiles, so if this checkbox is checked, we tell the
user that they should unlock the volume with Disks, which supports
unlocking TCRYPT volumes with keyfiles.
[1] https://www.veracrypt.fr/en/System%20Encryption.html
[2] https://www.veracrypt.fr/en/Header%20Key%20Derivation.htmlhttps://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/126